chapter 8 Flashcards
(29 cards)
nucleotide
each monomer unit within the polymer
each nucleotide consists of
a sugar, a phosphate, one of four bases
sugar in RNA
ribose
sugar in DNA
deoxyribose
bases in RNA
A,G,C,U
bases in DNA
A,G,C,T
nucleoside
unit consisting of a base bonded to a sugar
nucleotide
nucleoside joined to phosphoryl groups by an ester linkage
ionic interactions in the double helix
van der waals and hydrogen bonds
In ribose, the 2’ carbon atom of the sugar is linked to
hydroxyl group
in deoxyribose, the 2’ carbon atom of the sugar is linked to
hydrogen atom
In which direction do we write/read nucleic acids?
5’ -> 3’
semiconservative replication
each replicated DNA
molecule contains one parent strand and one newly-synthesized daughter strand
template for protein synthesis
mRNA
carries amino acids for peptide bond formation
tRNA
catalyst for protein synthesis
rRNA
catalyst for protein synthesis
rRNA
mRNA is always transcribed from the _____ strand of DNA.
Template
Codon
three coding bases on the mRNA template
transcription
synthesis of RNA from a DNA template
intron
non coding regions
translation produces
protein
anticodon
three complementary bases on the tRNA
exon
coding region
